Circuit kit for a humidifier



FIG. 1 is a top, rear and side perspective view of a circuit kit for a humidifier showing our new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a first side view thereof;

FIG. 5 is a second side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

Broken lines are used to illustrate features of the circuit kit for a humidifier which form no part of the claimed design. 

CLAIM The ornamental design for a circuit kit for a humidifier, as shown and described. 